Shogun Japan By Buckoz Period: 500 to Sep 16, 2000 Shogunate Japan Sep 16, 1185 Emperor go-diago overthrows the kamakura government Sep 16, 1185 kamakura shogunate Sep 16, 1232 Goseibai shikimoku legal code established Sep 16, 1348 rivalry between northern and southern emperors begins emperor go-murakami and emperor suko began rivals Sep 16, 1358 Shogun ashikiga yoshimitsu Sep 16, 1901 first mongol invasion Sep 16, 1902 Second mongol invasion Mar 2, 2022 Minimato clan siezed power in emperor's name Click Me!The Minimato clan seized power in emperor's name.